How to know if your crush likes you?

well im a dude and sometimes when i like a girl ill joke with her or play pranks on her but like ill just bug her u know not like throw her books down lol but guys do get worse in type but if he threw a racket at a kid for sayn that then u must like u cause i mean y else would he throw a racket at the kid and if he made ur friend move to sit with u then he must like u becouse that means he wants to be around u or ur just really smart lol but naa and he looks at u he probuly likes u just doesnt think u like him just ask him if he has feeling for u and if he does he will tell u and if he says idk do u say wat u feel.